參數(shù)資料
型號(hào)： MC-428LFF721
廠商： NEC Corp.
英文描述： 3.3 V Operation 16M-Word By 72-Bit Dynamic RAM Module(工作電壓為3.3V的動(dòng)態(tài)RAM模塊)
中文描述： 3.3 V工作電壓1,600由72字位動(dòng)態(tài)RAM模塊（工作電壓為3.3伏的動(dòng)態(tài)內(nèi)存模塊）
文件頁(yè)數(shù)： 5/32頁(yè)
文件大?。?/td> 277K
代理商： MC-428LFF721
5
MC-428LFF721
Electrical Specifications
All voltages are referenced to GND.
After power up (V
CC
≥
V
CC (MIN.)
), wait more than 100
μ
s (/RAS, /CAS inactive) and then, execute eight /CAS before
/RAS or /RAS only refresh cycles as dummy cycles to initialize internal circuit.
Absolute Maximum Ratings
Parameter
Symbol
Condition
Rating
Unit
Voltage on any pin relative to GND
V
T
0.5 to +4.6
V
Supply voltage
V
CC
0.5 to +4.6
V
Output current
I
O
50
mA
Power dissipation
P
D
9
W
Operating ambient temperature
T
A
0 to +70
°
C
Storage temperature
T
stg
55 to +125
°
C
Caution
Exposing the device to stress above those listed in Absolute Maximum Ratings could cause
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Supply voltage
V
CC
3.0
3.3
3.6
V
High level input voltage
V
IH
2.0
V
CC
+ 0.3
V
Low level input voltage
V
IL
0.3
+0.8
V
Operating ambient temperature
T
A
0
70
°
C
Capacitance (T
A
= 25
°
C, f = 1 MHz)
Parameter
Symbol
Test condition
MIN.
TYP.
MAX.
Unit
Input capacitance
C
I1
A0 - A12
90
pF
C
I2
/RAS0, /RAS2
50
C
I3
/CAS0 - /CAS7
35
C
I4
/WE0, /WE2
50
C
I5
/OE0, /OE2
50
Data input / output capacitance
C
I/O
DQ0 - DQ63, CB0 - CB7
30
pF
相關(guān)PDF資料
PDF描述
MC-428LFG641 3.3 V Operation 8M-Word By 72-Bit Dynamic RAM Module(工作電壓為3.3V的DRAM模塊)
MC-428LFH641 3.3 V Operation 8M-Word By 72-Bit Dynamic RAM Module(工作電壓為3.3V的DRAM模塊)
MC-42S4LFG64S 3.3 V Operation 16M-Word By 65-Bit Dynamic RAM Module(工作電壓為3.3V的動(dòng)態(tài)RAM模塊)
MC-42S8LFF64S 3.3 V Operation 16M-Word By 65-Bit Dynamic RAM Module(工作電壓為3.4V的DRAM模塊)
MC-42S8LFG64S 8 M-Word By 64-Bit Synchronous Dynamic RAM Module(同步動(dòng)態(tài)RAM 模塊)
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